MSI MAG B550 Tomahawk, AMD B550, AM4, 7C91-001R

shape factor ATX
chipset AMD B550
CPU-Compatibility Ryzen 4000G, Ryzen 3000, TDP-Limit: 105W
VRM 12 virtual phases (10+2), 7 real phases (5+2), PWM-Controller: RAA229004 (max. 8 phases)
MOSFETs CPU 12x 60A ISL99360
MOSFETs SoC 2x 60A ISL99360
RAM 4x DDR4 DIMM, dual PC4-40800U/?DDR4-5100 (OC), max. 128GB (UDIMM)
Extension slots 1x PCIe 4.0 x16, 1x PCIe 3.0 x16 (x4), 2x PCIe 3.0 x1, 1x M.2/M-Key (PCIe 4.0 x4/SATA, 22110/2280/2260/2242), 1x M.2/M-Key (PCIe 3.0 x4, 2280/2260/2242)
external connectors 1x HDMI 1.4, 1x DisplayPort 1.2, 1x USB-C 3.1 (B550), 1x USB-A 3.1 (B550), 2x USB-A 3.0, 2x USB-A 2.0, 1x 2.5GBase-T (Realtek RTL8125B-CG), 1x Gb LAN (Realtek RTL8111H), 5x jack, 1x toslink, 1x PS/2 Combo
Internal connectors 1x USB-C 3.0 Key-A Header, 1x USB 3.0 Header (2x USB 3.0), 2x USB 2.0 header (4x USB 2.0), 6x SATA 6Gb/s (B550), 1x TPM-Header, 1x Chassis Intrusion-Header
Header Cooling 1x CPU fan 4-Pin, 6x fan 4-Pin, 1x fan/pump 4-Pin
Header Lighting 2x 4-Pin RGB (+12V/G/R/B, max. 3A), 2x 3-Pin ARGB (+5V/DATA/GND, max. 3A)
buttons/Switches USB BIOS Flashback (external), LED switch (internal)
Audio 7.1 (Realtek ALC1200)
Graphics CPU
Wireless not available
RAID level 0/1/10 (B550)
Multi-GPU AMD 2-Way-CrossFireX (x16/x4)
Power connections 1x 24-Pin ATX, 1x 8-Pin EPS12V
Lighting RGB, 1 zone (chipset cooler)
BIOS 1x 32MB (256Mb)
Special features audio+solid capacitors, Diagnostic LED (LED indicators), I/O-shield integrated, 2x M.2-passive cooler
Warranty three years